TY - JOUR A1 - Nolze, Gert A1 - Han, M. A1 - Chen, C. A1 - Zhao, G. A1 - Li, L. A1 - Yo, B. A1 - Huang, X. A1 - Zhu, Y. T1 - Blind lattice-parameter determination of cubic and tetragonal phases with high accuracy using a single EBSD pattern T2 - Acta Crystallographia N2 - The Bravais lattices and their lattice parameters are blindly determined using electron backscatter diffraction (EBSD) patterns of materials with cubic or tetragonal crystal structures. Since the geometric relationships in a single EBSD pattern are overdetermined, the relative errors of determining the lattice parameters as well as the axial ratios are confined to about 0.7 ± 0.4% and 0.07 ± 0.03%, respectively, for ideal simulated EBSD patterns. The accuracy of the crystal orientation determination reaches about 0.06 ± 0.03°. With careful manual band detection, the accuracy of determining lattice parameters from experimental patterns can be as good as from simulated patterns, although the results from simulated patterns are often better than expermental patterns, which are lower quality and contain uncertain systematic errors. The reasonably high accuracy is obtained primarily because the detection of the diffracting-plane traces and zone axes is relatively accurate. The results here demonstrate that the developed procedure based on the EBSD technique presents a reliable tool for crystallographic characterization of the Bravais lattices of unknown phases. PB - International Union of Crystallography KW - EBSD KW - Bravais lattice KW - Lattice parameters KW - Kikuchi pattern PY - 2018 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/46455 AN - OPUS4-46455 SN - 2053-2733 VL - 74 IS - 6 SP - 630 EP - 639 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany